MINERAL SPECIMENS FOR DISPLAY

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= Fluorescent Specimen
= Radioactive Specimen

TOPAZ with QUARTZ
Shingus Area, Gilgit Division, Pakistan
This area has become famous for its Topaz specimens in the last 20 years or so. This unusual specimen is an intergrowth composed of two double terminated, clear / colorless crystals with only a very small point of attachment on one side of the specimen. A very interesting feature on this specimen are several microscopic, double terminated Quartz crystals which can be seen free-floating within the base of one of the Topaz crystals. These free-floating, double terminated Quartz crystals require 20-30X magnification for best appreciation and study. The other Topaz crystal has several irregularly shaped micro cavities included, which have tiny gas bubbles trapped within. No matrix.
Order Item MI-1094
Specimen size: 1 1/4” X 1 1/4” across, X 3/4” thick
Price: $65.

MALACHITE pseudo after AZURITE
Touissit Mine, near Oujda, Morocco
Bright green Malachite has completely, and very sharply replaced a 2 1/2" tall Azurite crystal. The original Azurite crystal appears to have been double terminated. No matrix or point of attachment.
Size: 2 1/2" tall, 1 X 1" diameter
Order item MI-037 $125.

QUARTZ – Japan Twin
Mina Tiro Estrella, Lincoln County, New Mexico
This locality was featured in the New Mexico special issue of the “Mineralogial Record” magazine, Jan-Feb 1989 (20:1), pages 51-53. A Japan twinned crystal of “thumbnail” size, the specimen is mounted in a #4 Perky Box. The crystal is very transparent, and has well developed striations on the prism faces. Lorraine Sofia collection.
Order Item MI-1096
Specimen size: 1 1/8” wide, 1 1/4” tall, and near 1/4” thick at the base
Price: $65.

MI-039

HUBNERITE with QUARTZ
Huayllapon Mine, Pasto Bueno District, Ancash Dept., Peru
This very good specimen, with large, near-black, striated, prismatic crystals, was probably collected in the mid-1970’s when the first specimens of Hubnerite were being brought out of the Pasto Bueno district. See the "Mineralogical Record" magazine, Vol. 28, No. 4, P. 36 for information on collecting experiences in the early days when Hubnerite specimens were first found in this district. Most recently from the J. Clark collection, this specimen is essentially a group consisting of three or more intergrown thick, bladed, prismatic crystals with multiple striations, and matte-luster terminations. The large crystal in the front-center of the specimen, as oriented in the accompanying photo, measures 2 7/8" tall X 1 3/8" wide. The two crystals at the back of the specimen are 2 3/8", and 2 1/2" tall. Small milky white Quartz crystals can be seen grouped around the base of this impressive Hubnerite crystal group on both the front and back of the specimen. No rock matrix.
Size: 3 1/4" tall X 1 7/8" wide X 3/4" thick.
Order Item MI-039 SOLD

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FRANCKEITE with ZINKENITE
"D" Vein, 220 Level, San Jose Mine, Dept. of Oruro, Bolivia
The San Jose Mine has become famous for its production of world class specimens of Franckeite, Teallite, Zinkenite, Cylindrite, and other sulfide/sulfosalt minerals, including several of the Silver-bearing sulfosalts. For background information, see the article in the "Mineralogical Record" magazine, May-June 1975 (Vol. 6, No. 3), P. 125-137, entitled "The Mineralogy of the Department of Oruro, Bolivia". Franckeite is described on P. 133. Additional information also appears in the "Handbook of Mineralogy", Vol. I, (1990), P. 160, and in the "Encyclopedia of Minerals", 2nd Edition, Roberts, et al, (1990), P. 293. Two different types are listed below:

TYPE I - In this group, Franckeite was formed as spherical aggregates with a radial structure, i.e., the center of each specimen is the nucleus, from which all of the individual, metallic lead-gray color Franckeite crystals grew. Closely packed Franckeite crystal terminations can be seen protruding out of the backs of the specimens, while the front of each specimen exhibits the internal, radially structured (*), tightly intergrown Franckeite crystal prism faces. Hair-like metallic gray Zinkenite is associated, formed upon the backs of the specimens. The light colored areas seen near the center of item B. are Pyrite. Item D. is a compact intergrowth composed of several of the spheroidal aggregates of Franckeite -- the two largest each measure 5/8" in diameter. None of the specimens have rock matrix. Specimen sizes are given: length X width X thickness, in inches. Order MI-040, Type I A, B, C, or D.

MI-040 TYPE I	SPECIMEN SIZE (INCHES)			SPECIMEN PRICE
A.	5/8	5/8	1/2	SOLD
B.	1 1/2	1	1	SOLD
C.	1 3/4	1 1/4	7/8	SOLD
D.	2 1/4	1 1/2	1 1/4	$120.00

TYPE II - The Franckeite specimens in this group exhibit the same radially structured arrangement of the crystals as the Type I specimens, however, the spheroidal aggregates are complete on all sides. One can see the individual, metallic lead-gray color crystalline Franckeite, and/or small Franckeite crystals, completely covering all surfaces of each specimen. Hair-like metallic gray Zinkenite is associated on all specimens -- magnification of 15-20X is needed for best appreciation of the Zinkenite. On item B., a compact intergrowth, composed of the hair-like metallic gray Zinkenite, protrudes from one side of the otherwise equidimensionally formed spheroid of Franckeite. Item C. has a partial section of a second, radially structured Franckeite crystal group protruding from the side of the main Franckeite crystal spheroid. Item D. is a complete, spheroidal aggregate of Franckeite crystals -- it would look like item I C, if separated so that the center of the crystal group could be observed. Specimen sizes are given: length X width X thickness, in inches. Order MI-040, Type II E, F, G. or H.

MI-040 TYPE II	SPECIMEN SIZE (INCHES)			SPECIMEN PRICE
E.	1/2	1/2	1/2	SOLD
F.	3/4	1/2	1/2	SOLD
G.	3/4	3/4	3/4	$ 40.00
H.	1 1/2	1 1/8	3/4	$ 85.00